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#include<string.h>
#include<stdio.h>
#include<assert.h>
#include<ctype.h>
#include<time.h>
#include<errno.h>
#include<net/if.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include "mrl_utils.h"
#include "mrl_main.h"
extern struct mrl_global_instance mrl_instance;
int mrl_get_pkt_tuple(const char *raw_packet, struct mrl_tuple *five_tuple)
{
struct tcphdr *tcp_hdr = NULL;
struct udphdr *udp_hdr = NULL;
struct iphdr *ip_hdr = (struct iphdr*)raw_packet;
int iphdr_len = 4*ip_hdr->ihl;
five_tuple->protocol = ip_hdr->protocol;
inet_ntop(AF_INET,(void *)&(ip_hdr->saddr),five_tuple->sip,MRL_STR_IP_LEN);
inet_ntop(AF_INET,(void *)&(ip_hdr->daddr),five_tuple->dip,MRL_STR_IP_LEN);
switch(five_tuple->protocol)
{
case MRL_UDP_TYPE:
udp_hdr=(struct udphdr *)(raw_packet+iphdr_len);
five_tuple->sport = ntohs(udp_hdr->source);
five_tuple->dport = ntohs(udp_hdr->dest);
break;
case MRL_TCP_TYPE:
tcp_hdr=(struct tcphdr *)(raw_packet+iphdr_len);
five_tuple->sport = ntohs(tcp_hdr->source);
five_tuple->dport = ntohs(tcp_hdr->dest);
break;
default:
assert(0);
break;
}
return 0;
}
unsigned int mrl_get_ip_by_eth_name(const char *ifname)
{
int sockfd;
struct ifreq ifr;
unsigned int ip;
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (-1 == sockfd) {
goto error;
}
strcpy(ifr.ifr_name,ifname);
if (ioctl(sockfd, SIOCGIFADDR, &ifr) < 0) {
goto error;
}
ip = ((struct sockaddr_in*)&(ifr.ifr_addr))->sin_addr.s_addr;
close(sockfd);
return ip;
error:
close(sockfd);
return -1;
}
/* ascii�ַ�ת16���� */
char mrl_ascii_to_hex(char ascii)
{
char c = 0;
switch(ascii)
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
c = ascii - 0x30;
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
c = 10 + ascii - 0x61;
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
c = 10 + ascii - 0x41;
break;
}
return c;
}
/* 2012-04-11 LiJia add,��MAC�ַ�����ʽת��Ϊ16����MAC��ַ.
����:
str: MAC��ַ�ַ���
delim: �ַ����ָ���������Ϊ':', '-'��,��: xx:xx:xx:xx:xx:xx
����ַ����ָ�����delim��Ϊ-1.
mac: �洢MAC��ַ������(ָ��),���Ϊ������,
������MAC��ַΪ11:22:33:44:55:66,��mac[0]Ϊ0x11,mac[5]Ϊ0x66.
����ֵ:
0: ����
-1:����
*/
int mrl_mac_pton(const char *str, int delim, uint8_t *mac)
{
#define MAC_STR_LEN_DELIM (17) /* length of "11:22:33:44:55:66" */
#define MAC_STR_LEN_NODELIM (12) /* length of "112233445566" */
const char *s = str;
int i;
/* �������Ϸ��� */
if(delim != -1)
{
if(strlen(str) != MAC_STR_LEN_DELIM)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mac_pton","MAC string length error!");
assert(0);
return -1;
}
}
else
{
if(strlen(str) != MAC_STR_LEN_NODELIM)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mac_pton","MAC string length error!");
assert(0);
return -1;
}
}
/* �������Ϸ��ԣ�ͬʱת����16����ֵ */
for(i = 0; i < 6; i++)
{
mac[i] = 0; /* �����㣬��ֵ��䶼�ǻ���� */
if(isxdigit(*s)==0)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mac_pton","MAC string type error!");
assert(0);
return -1;
}
mac[i] |= mrl_ascii_to_hex(*s) << 4;
s++;
if(isxdigit(*s)==0)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mac_pton","MAC string type error!");
assert(0);
return -1;
}
mac[i] |= mrl_ascii_to_hex(*s);
s++;
if((delim != -1) && i<5 && (*s++ != (char)delim))
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mac_pton","MAC string type error!");
assert(0);
return -1;
}
}
return 0;
}
unsigned int mrl_split_str(char *str, const char *delim, char **dest)
{
unsigned int i = 0;
char *temp;
size_t len = 0;
temp = strtok(str, delim);
while (temp != NULL)
{
len = strlen(temp) + 1;
/* While there are tokens in "string"*/
if(strncpy(dest[i], (const char*)temp, len) <0)
{
assert(0);
}
dest[i][len]='\0';
i++;
/* Get next token: */
temp = strtok(NULL, delim);
}
return i;
}
void mrl_get_cur_time(char *date)
{
time_t t;
struct tm *lt;
time(&t);
lt = localtime(&t);
snprintf(date, MRL_DATE_LEN,"%d/%d/%d/%d:%d:%d",lt->tm_year+1900, lt->tm_mon, lt->tm_mday, lt->tm_hour, lt->tm_min, lt->tm_sec);
}
unsigned short mrl_get_checksum(unsigned short * buffer, size_t len)
{
unsigned int sum = 0;
while (len > 1) {
sum += *buffer++;
len -= sizeof(unsigned short);
}
if (len) {
sum += *(unsigned char *)buffer;
}
while (sum >> 16) {
sum = (sum >> 16) + (sum & 0xffff);
}
return (unsigned short)(~sum);
}
void mrl_mmdb_init(const char *path)
{
int status =MMDB_open(path,MMDB_MODE_MMAP,&(mrl_instance.mrl_mmdb));
if(status != MMDB_SUCCESS)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mmdb_init","Can't open %s - %s!",path,MMDB_strerror(status));
if(status == MMDB_IO_ERROR)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mmdb_init","IO error: %s",strerror(errno));
}
assert(0);
}
}
int mrl_search_ip_country(MMDB_s mmdb, const char *ip_address, const char *mycountry)
{
int gai_error, mmdb_error;
MMDB_lookup_result_s result = MMDB_lookup_string(&mmdb, ip_address, &gai_error, &mmdb_error);
if (0 != gai_error)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mmdb_search","Error from getaddrinfo for %s - %s!",ip_address,gai_strerror(gai_error));
assert(0);
}
if (MMDB_SUCCESS != mmdb_error)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mmdb_search","Got an error from libmaxminddb: %s!",MMDB_strerror(mmdb_error));
assert(0);
}
MMDB_entry_data_s entry_data;
if (result.found_entry)
{
int status = MMDB_get_value(&result.entry, &entry_data, "COUNTRY", NULL);
if (MMDB_SUCCESS != status)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_mmdb_search","Got an error looking up the entry data - %s!",MMDB_strerror(status));
assert(0);
}
if (entry_data.has_data)
{
if(memcmp(mycountry, entry_data.utf8_string, entry_data.data_size) == 0)
{
return 0;
}
else
{
return 1;
}
}
}
return -1;
}
int mrl_is_inside_ip(const char *ip_addr)
{
int location = 0;
location = mrl_search_ip_country(mrl_instance.mrl_mmdb, ip_addr, mrl_instance.mrl_cfg.ip_location);
if(location < 0)
{
MESA_handle_runtime_log(mrl_instance.mrl_log_handle, RLOG_LV_FATAL,"mrl_is_inside_ip","cur ip addr %s not exist in mmdb",ip_addr);
return 0;
}
return location;
}
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